Table 3-1. Preventive Maintenance Checks and Services (PMCS)

TM 5-6640-213-14

NOTE: Within designated interval, these checks are to be performed in the

order listed.

B - Before

A - After

M - Monthly

D - During

M - Monthly

C - Combat Operability Check

Vacuum

Check if vacuum pump motor

Pump

is lubricated and the vacuum

pump is properly filled with

oil.

Make certain all vacuum

pump fittings are perfectly

sealed.

Check the condition of drive

belt, make sure belt is not

too tight or too loose, check

Check all connections for

tightness.

Check oil level after pump

as been running for at least

15 minutes. Oil level should

e maintained between oil

level marks when in

peration.

Check for overheating.

Check for vacuum pipe

connections and fittings for

vacuum leaks.

Check vacuum pressure gage

on control panel.